Question

I do have a \res\layout\main.xml file.

Yet, this:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

…gives me the err msg, “R cannot be resolved to a variable”

in my Activity.java file.

What am I missing?

Alright, I see there is nothing in the project’s Gen folder. What would cause it to not get populated?

Answer 1

Here are the steps which helps me to resolve this problem.

1. Delete R.java (Eclipse will recreate it immediately. If not there is a problem with the code or layout)
2. Clean the project (Eclipse menu ‘Project’ & ‘Clean’
3. Recompile the project

These steps resolve the problem with my work.